locked rotation function

Hi,
You may want to try REPLACE (Liang Tong) for full support
for calculations with the locked rotation function. The
program does have other fast and conventional rotation
functions too.
The program is also part of the InsightII/Xsight package
for macromolecular crystallography.
John Badger
Product Development Manager, Macromolecular Crystallography
Molecular Simulations Inc.